Steam-engine governor



(No Model.)

J. M. MASON.

STEAM ENGINE GOVERNOR. No. 311,770. N Patented Feb. 3, 1885.

. scattering oil.

NITED STATES JOHN M. MASON, OF CHELSEA, MASSACHUSETTS.

'STEAM ENGINE GOVERNOR.

SPECIFICATION forming part of Letters Patent No. 311,770, dated February 3, 1885.

(No model.)

To aZZ whom it may concern:

Be it know-n that I, JOHN M. Mason, of Chelsea, in the county of Suffolk and State of Massach usetts,have invented certain Improvements in Steam-Engine Governors, of which the following is a specification.

This invention has for its object, first, to provide improved means for adjusting the valve operated by a steam-engine governor; secondly, to enable the steam to balance said valve; thirdly, to provide an improved form of .spring, whereby the pivoted weights or arms of the governor are pressed inwardly, and improved means for securing said spring to the pivoted arms; fourthly, to provide a cover for the arms of the governor, whereby they are protected from dust and prevented from To these ends my invention consists in the improvements which I will now proceed to describe and claim.

Of the accompanying drawings, forming a part of this specification, Figure 1 represents a vertical central section of a governorhaving my improvements. Fig. 2 represents a sec tion on line a: at, Fig. 1.

The same letters of reference indicate the same parts in both the figures.

In the drawings, a a represent the weights or weighted arms of the regulator, which are pivoted at b b to arms on a stud, f, which is rotated by a suitable connection with the en gine. The arms a a are engaged at their inner ends with a flanged collar, 0, rigidly secured to the valve-rod d. 6 represents the cylindrical valve secured to the rod d, and raised and lowered by the action of the arms a, a, and thus caused to regulate the passage of steam by the speed of the engine in the usual manner.

My first improvement relates to the valverod, and consists in making said rod in two sections, 2 3, connected by aturn-buckle, 4. The turn-buckle constitutes a convenient means for varying the length of the valve-rod, and thus regulating the initial position of the rod. Check-nuts 6 6 are provided on the sections 2 3, which are turned against the ends of the turn-buckle after the adjustment is effected to prevent either section from turning in the turn-buckle. Flanges or ears 7 7 are formed on one side of the turn-buckle, and a pin, 8, held by a set-screw, 9, in asocket in the supportingframe h, projects into the recess between said ears and prevents the turn-buckle from rotating accidentally. When the val ve-rod is to be adjusted by the rotation of the turnbuckle, the pin 8 is withdrawn.

My second improvement relates to the valve 6 and the port i, which is controlled by the valve. This part of my invention consists in forming the valve with a peripheral depres sion, j, extending entirely around it, so as to form an annular steam-space between the valve and the chamber in which it is contained, and in extending the portt' as shown at i, so that steam will always findl access to said annular space and balance the valve in any position that the valve may assume.

My third improvement relates to the spring k, that presses the outer ends of the-governorarms a a inwardly, and to the means for securing said spring in place. The spring is made of a single curved or bowed piece having orifices 0 near its ends. Each arm a is provided with a stud, p, and the orifices in the ends of the spring are engaged with said studs, as shown in Fig. 1, the resilience of the spring causing its ends to press inwardly against the arms, and therefore keeping said ends in engagement with the studs 19. The arms a a are provided with recesses g, which receive the ends of the spring 70, the studs 1) being formed in said recesses. The sides of the recesses bear against the opposite edges of the spring and prevent the spring from being displaced laterally. The arms 0", to which the weighted arms a are pivoted, have upwardly-projecting studs 1" at opposite edges of the spring k. Said studs keep the spring in place laterally at its upper portion.

The last feature of my improvement con sists of a dome or cover, 8, covering the arms a a, and a cast-metal base, t, formed on the supporting-frame h and forming a bottom for the space inclosed by the dome s. The base t has a marginal lip or flange, t, the inner wall of which forms a socket for the lower edge of the dome. The dome is madefrom sheet metal, and is of such size as to fit closely in the flange t and bear against the same with a yielding pressure due to its elasticity, so that it is held in place by friction, and can be removed without difficulty when it is desirable to obtain access to the regulator-arms. It will be seen that the dome or cover excludes dust and prevents the regulator-arms from throwing oil, as they are liable to do, especially when newly lubricated at their joints or pivots.

I am aware that in Patent No. 25,79I the arms of a governor are connected with a valve by means of a rod made in sections, which are connected by a nut or turnbuckle, whereby the length of the rod may be adjusted, means being also provided for preventing the turnbuckle from rotating; hence I do not claim this feature, broadly. My improvement on the construction shown in said patentconr prises the check-nuts 6 6, which prevent the sections of the valve-rod from rotating independently, and the pin 8, passing entirely through a socket in the supporting-frame and detachably secured to said frame by a setscrew, so that it can be readily withdrawn when it is desired to rotate the turn-buckle. Nor do I claim, broadly, a cover for the arms of the governor, as I am aware that the same is not new.

I claim 1. In a governor, the combination of the valve-rod made in sections, as described, the turn-buckle connecting said sections and provided with longitudinal ribs or flanges 7 7, and the'pin 8, passing through a socket in the supporting-frame and projecting between said 0 flanges to prevent the turn-buckle from rotating, said pin being secured by a set-screw, 9, whereby it may be loosened and withdrawn to permit the rotation of the turnbuckle, as set forth. 35

2. The pivoted governor-arms having recesses q q and studs 19 12, combined with the single spring adapted to bear at its edges against the sides of said recesses, and having orifices in its ends adapted to engage said 0 studs, as set forth.

3. In a governor, the combination of the revolving governor-arms, the fixed supportingframe having the flanged base or plate under said arms, and the elastic sheet-metal dome or 5 cover fitted to said flanged base and bearing against the same with a yielding pressure, whereby the dome is held in place on the base 7 and its ready removal is permitted, as set' forth.

In testimony whereof I have signed my name to this specification, in the presence of two subscribing witnesses, this 10th day of March,

\ JOHN M. MASON.

Witnesses:

O. F. BROWN, A. L. WHITE. 

